12678388 has 12 divisors (see below), whose sum is σ = 22214500. Its totient is φ = 6331392.

The previous prime is 12678371. The next prime is 12678427. The reversal of 12678388 is 88387621.

It is a happy number.

12678388 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 5560164 + 7118224 = 2358^2 + 2668^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3238 + ... + 5986.

Almost surely, 2^12678388 is an apocalyptic number.

It is an amenable number.

12678388 is a deficient number, since it is larger than the sum of its proper divisors (9536112).

12678388 is a wasteful number, since it uses less digits than its factorization.

12678388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3906 (or 3904 counting only the distinct ones).

The product of its digits is 129024, while the sum is 43.

The square root of 12678388 is about 3560.6724084083. The cubic root of 12678388 is about 233.1782361584.

The spelling of 12678388 in words is "twelve million, six hundred seventy-eight thousand, three hundred eighty-eight".